Type-writing machine.



Z. G. SHOLES. 'TYPE wIIITIIIG MACHINE.

APPLICATION FILED Aue.4. |914. y 1,162,194., Y. Patented Nov. 30, 1915.

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APPLICATION FILED ^UG.4. |914.

i ,l 62., l 94. VPatented Nov. 30, 1915.

A TTOHNEY 'To 1H :ciu/m it may concern.' i

UNITED STATES PATENT OFFICE.

ZALMON G. SHOLES, 0F WILMINGTON, DELAWARE, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO SHOLES STANDARD TYPEWRITER COMPANY, OF WILMINGTON. DELA- WARE, A CORPORATION OF DELAWARE. y Y

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented N ov. 30, 1915.

Application filed August 4, 1914. Serial No. 854,907.

Be it known that I. ZALuoN G. SHoLEs, a citizen ot' the [nited States, residing at lVilinington, in the State of Delaware, have invented certain new and useful 4Improvements in T vpe-ll'i'iting Machines; and I do hereby declare the following to be a' full, clear, and exact description of the invention, such will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to improve` ments in typewriting machines, andis intended to provide a simple, effective and durable mechanism which may be used with va very light touch, and in which the parts stood by referencev to the accompanying drawings, in which similar parts are indicated by similar reference symbols throughout the several views.

Figure 1 is a longitudinal elevationpgof such parts of a typewriter as will illustrate mylinvention, the other parts being omitted for the sake of clearness in the drawings; Fig. 2 is a detail showing the type lever and certain other parts disconnected from the machine; Figs. 3 and 4 are, respectively, a plan View and front elevation of a special formV of bearing rod adapted to be used in the invention; Fig. 5 is a front view of the segment to which the type levers are attached: Fig. 6 is a perspective view of a poirtion of the segment shown in Fig. 5; 'and Fig. 7 is a similar view of a portion of the bearing rod used in said segment.

19 represents one of the key levers having its heel slotted, as at 22, see Fig. 2, with an enlargedv recess 21 adapted toy engage the rounded portion 10 of the bearing rod, while the slot 22 permits the heel of said lever to be freely slid over the notched portion 1l of said rod. The ends of the rod pass through the end lugs 1h and 17 of the segment l2, and are adjustably connected in place by nuts and 35",. engaging the screw threads 15, provided on the ends of the rod as shown in Fig. 5. This key lever-.18 has hinged thereto. as at i8 the link 1f* which is hinged to the upper end ot' the upright lever 20; and this lever 20 is journal'cd at 25 on a similar bearing rod to that shown in Figs. 3, 4 and 7, and'i's provided with a pivot bear- `ii'ig 23 adapted to it the rounded portion 10 l ot' the ,bearing rod, and with'a slot 24 adapted to slip over the notched portions 'ofsaid bearing rod, so that when said bearing rod is moved a slight distance in one direction` the upright levers may be all .slid into place,

and then a slight backward movement'of4 The lower end of the upright lever 20 is provided with a cam groove 27, into which projects the pin or roller 28 carried by the key lever 29. This key leyer 29 is notched, as at 30, to form a pivot bearing engaging the part 30, and is held in engagement with said part 30a by means of the adjustable coil spring 3l. which spring also serves to restore the key lever, also the upright lever,

and the printing lever to the normal position ready for operation,'which' is that shown in Figs. l and 2.

It will be noted that as the key lever 29 is depressed. the pin 28 will slide down the lower side of the cam groove 27, pressing the heel of the upright lever backward, and swinging the type lever upward and forward with an acceleratedmotion due to the shape of the cam groove 27. When the key lever 29 is released, theA spring 3K1. will pull the pin 28 upward against the upper face of the cam groove 27 and will restore the type lever 18 to the initial position shown in Fig. 1` which movement ofthe type lever will also be supplemented by the weight of the free arm of the type lever.

By properly shaping the lower engaging face of the cam groove 27. the desired touch may be secured for the instrument, and the swinging movement of ,the type lever may be etiectedl with the 'acceleration desired.

By having the bearin rod notched as shown in Figs. 3, 4 and the type levers may be quickly and readily applied to che segment 12, and the upright levers 20 may be readily and quickly applied to their bearings 25. Moreover any defective lever can be removed, when desired. by simply shifting the bearing rod through a suflicient distance to allow the notches l1 to coincide with the slots 22 or 24, as the case may be, When any or all of the levers in the set may be removed if desired.

Having thus described my invention what I claim'and desire to secure by Letters Pat-- ent of the United States is In a typewriting machine, the combination` with a type lever pivoted at its heel `to the/frame of the machine, and provided with a laterally-projecting lug on its heel, a key lever provided with a pin near its forward end, a Spring normally holding said key lever in the raised position, a centrally pivi oted upright lever having its heel provided with a cam groove adapted to engage said pin on the key lever, and a link connectingr the upper end of said upright lever and said lug on the heel of said type lever, with means for detachably 'connecting said type lever and said upright lever, respectively, to their pivots, comprising rounded pivot bearings provided in said levers opening into narrower slots therein, and bearing rods having notched'portions adapted to pass freely intofsaid slots, said rods being provided Xvith rounded bearing portions adapt-- ed to register with said roundedpivot bearings in Said levers7 and to lock said levers in place, when said rods are moved longitudinally, substantially as described'.

In testimony whereof, I have affixed my signature, in presence of two Witnesses.

.ZALMON G. SHOLES.- Witnesses:I

WILLIAM F. OKEEFE, LOLITA THoMPsoN. 

